package cn.yanjr.wechat.util;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;
import java.util.Map;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;

import org.apache.log4j.Logger;

import cn.yanjr.common.cache.Cache;
import cn.yanjr.common.cache.CacheManager;
import cn.yanjr.wechat.pojo.Token;

import com.alibaba.fastjson.JSONException;
import com.alibaba.fastjson.JSONObject;

/**
 * 通用工具类
 * 
 * @author liufeng
 * @date 2013-10-17
 */
public class CommonUtil {
	private static Logger log = Logger.getLogger(CommonUtil.class);
	
	// 第三方用户唯一凭证
	public final static String appId = "wx313760539e73be8d";
	// 第三方用户唯一凭证密钥
	public final static String appSecret = "bcfb976c247b9cc0315bef702e38565a";

	// 凭证获取（GET）
	public final static String token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";
	//模板消息(POST)
	public final static String temp_send_url = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=ACCESS_TOKEN";
	
	public final static String ACCESS_TOKEN = "ACCESS_TOKEN";
	
	/**
	 * 发送https请求
	 * 
	 * @param requestUrl 请求地址
	 * @param requestMethod 请求方式（GET、POST）
	 * @param outputStr 提交的数据
	 * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
	 */
	public static JSONObject httpsRequest(String requestUrl, String requestMethod, String outputStr) {
		JSONObject jsonObject = null;
		try {
			// 创建SSLContext对象，并使用我们指定的信任管理器初始化
			TrustManager[] tm = { new MyX509TrustManager() };
			SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
			sslContext.init(null, tm, new java.security.SecureRandom());
			// 从上述SSLContext对象中得到SSLSocketFactory对象
			SSLSocketFactory ssf = sslContext.getSocketFactory();

			URL url = new URL(requestUrl);
			HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
			conn.setSSLSocketFactory(ssf);
			
			conn.setDoOutput(true);
			conn.setDoInput(true);
			conn.setUseCaches(false);
			// 设置请求方式（GET/POST）
			conn.setRequestMethod(requestMethod);

			// 当outputStr不为null时向输出流写数据
			if (null != outputStr) {
				OutputStream outputStream = conn.getOutputStream();
				// 注意编码格式
				outputStream.write(outputStr.getBytes("UTF-8"));
				outputStream.close();
			}

			// 从输入流读取返回内容
			InputStream inputStream = conn.getInputStream();
			InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
			BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
			String str = null;
			StringBuffer buffer = new StringBuffer();
			while ((str = bufferedReader.readLine()) != null) {
				buffer.append(str);
			}

			// 释放资源
			bufferedReader.close();
			inputStreamReader.close();
			inputStream.close();
			inputStream = null;
			conn.disconnect();
			jsonObject = JSONObject.parseObject(buffer.toString());
		} catch (ConnectException ce) {
			log.error("连接超时：{}", ce);
		} catch (Exception e) {
			log.error("https请求异常：{}", e);
		}
		return jsonObject;
	}

	/**
	 * 获取接口访问凭证
	 * 
	 * @param appid 凭证
	 * @param appsecret 密钥
	 * @return
	 */
	public static Token getToken() {
		Token token = null;
		Cache cache = CacheManager.getCacheInfo("ACCESS_TOKEN");
		if(cache == null || cache.isExpired()) {//token 不存在，或者已经过期
			String requestUrl = token_url.replace("APPID", appId).replace("APPSECRET", appSecret);
			// 发起GET请求获取凭证
			JSONObject jsonObject = httpsRequest(requestUrl, "GET", null);
			if (null != jsonObject) {
				try {
					token = new Token();
					token.setAccessToken(jsonObject.getString("access_token"));
					token.setExpiresIn(jsonObject.getIntValue("expires_in"));
					
					CacheManager.putCacheInfo(ACCESS_TOKEN, token, new Long((token.getExpiresIn() - 200) * 1000));
				} catch (JSONException e) {
					token = null;
					// 获取token失败
					log.error("获取token失败 errcode:{" + jsonObject.getIntValue("errcode") + "} errmsg:{" + jsonObject.getString("errmsg") +"}");
				}
			}
		} else {
			token = (Token) cache.getValue();
		}
		return token;
	}
	/**
	 * 发送 任务异常报告模板信息
	 * @param openId
	 * @param tastId
	 * @param taskGroup
	 * @param createTime
	 * @param type
	 * @return
	 */
	public static Map<String, Object> sendTaskTempMsg(String openId, String taskId, String taskGroup,
			String createTime, String type) {
		
		JSONObject parentJSON = new JSONObject();
        parentJSON.put("touser", openId);
        parentJSON.put("template_id", "venMjuZZW-B_WqU5dThDPepd4EJ9V-bbga0n4qe2dlo");//任务异常报告
        parentJSON.put("url", "http://weixin.qq.com/download");

        JSONObject json = new JSONObject();
        json.put("taskId", toJson(taskId));
        json.put("taskGroup", toJson(taskGroup));
        json.put("createTime", toJson(createTime));
        json.put("type", toJson(type));
        
        parentJSON.put("data", json);
		

//		 调用接口获取凭证
		Token token = CommonUtil.getToken();
		String requestUrl = temp_send_url.replace("ACCESS_TOKEN", token.getAccessToken());
		
		// 发起GET请求获取凭证
		JSONObject jsonObject = httpsRequest(requestUrl, "POST", parentJSON.toString());
		System.out.println(jsonObject);
		return null;
	}
	
	public static JSONObject toJson(String value){
        JSONObject json = new JSONObject();
        json.put("value", value);
        json.put("color", "#173177");//消息字体颜色
        return json;
    }
	
	
}